How to Replace a Lexus ES300 Window Motor

The Lexus ES300 sedan is manufactured with electric power windows that use a small motor to turn the window regulator and move the window up or down. This motor can wear out and require replacement, which will take the average at-home mechanic about 40 minutes.

Things You'll Need

Socket set

Screwdrivers

Disconnect the battery by turning the positive, red terminal bolt in a counterclockwise direction.

Remove the door handle trim by unscrewing the interior door handle trim's screws in a counterclockwise direction. The trim can be removed and set aside.

Pull the power window switches out of the door panel, and disengage the wires at the plug adapter. The switches can be set aside.

Unbolt a single hex-head bolt in the opening left by the power window switches that holds the door panel to the metal door frame. It can be rotated out with a socket wrench in a counterclockwise direction.

Remove the door panel by pulling on the corners firmly until the plastic pop rivets that hold it to the metal are freed. Continue to pull around the edge of the door panel to pop all remaining rivets. The door panel will come off in one piece and can be set aside.

Remove the three bolts that hold the power window motor to the window regulator and door frame by turning them in a counterclockwise direction. Unplug the motor's wiring from the adapter plug nearby, then pull the motor directly out. The gears in the back will disengage and the motor will be free.

Replace the motor into the window regulator by lining up the gears on it's spindle with those in the regulator, then secure the three bolts that hold it in place. Attach the wiring harness by pressing the adapter plugs together.

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Press the door panel into position, then push the panel against each pop rivet until it is secured. Replace the bolt at the switch opening, then replace the switches by connecting their wiring adapter plug and pressing them into the door panel. Fasten the interior handle trim by turning the screws clockwise.

Reconnect the battery at the positive terminal, then test the window.

Tips & Warnings

Check the fuses before this repair.

Use protective equipment when working on a vehicle's electrical system.